EP0078252A2 - Appareil de soudage électronique - Google Patents

Appareil de soudage électronique Download PDF

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Publication number
EP0078252A2
EP0078252A2 EP82890153A EP82890153A EP0078252A2 EP 0078252 A2 EP0078252 A2 EP 0078252A2 EP 82890153 A EP82890153 A EP 82890153A EP 82890153 A EP82890153 A EP 82890153A EP 0078252 A2 EP0078252 A2 EP 0078252A2
Authority
EP
European Patent Office
Prior art keywords
voltage
welding
power supply
transistors
current
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP82890153A
Other languages
German (de)
English (en)
Other versions
EP0078252A3 (en
EP0078252B1 (fr
Inventor
Klaus Fronius
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fronius Schweissmaschinen KG Austria
Original Assignee
Fronius Schweissmaschinen KG Austria
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AT456581A external-priority patent/ATA456581A/de
Priority claimed from AT229582A external-priority patent/AT375289B/de
Priority claimed from AT362282A external-priority patent/AT376387B/de
Priority claimed from AT823867A external-priority patent/ATA386782A/de
Application filed by Fronius Schweissmaschinen KG Austria filed Critical Fronius Schweissmaschinen KG Austria
Publication of EP0078252A2 publication Critical patent/EP0078252A2/fr
Publication of EP0078252A3 publication Critical patent/EP0078252A3/de
Application granted granted Critical
Publication of EP0078252B1 publication Critical patent/EP0078252B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/09—Arrangements or circuits for arc welding with pulsed current or voltage
    • B23K9/091—Arrangements or circuits for arc welding with pulsed current or voltage characterised by the circuits

Definitions

  • switched-mode power supplies for small and medium-sized power are known primarily from laboratory technology and entertainment electronics, which are designed as so-called switched-mode power supplies.
  • the mains voltage is first rectified, then "chopped" with a high switching frequency (usually above 20 KHz), transformed to the desired voltage using a transformer, and then rectified again.
  • a high switching frequency usually above 20 KHz
  • the efficiency can be increased and the volume and weight of the transformer can be significantly reduced.
  • switched-mode power supplies regulated on the primary or secondary side the regulation being carried out either by changing the cycle time at a constant frequency or by changing the frequency at a constant working pulse duration.
  • Fast power transistors for higher operating voltages are mostly used as switches.
  • Fig. 1 denotes the mains connection (e.g. 3x380V three-phase current, or 220V luminous flux), and 2 a mains rectifier, which can also contain a mains filter (not shown).
  • the converter or the switching stage 3 of the switched-mode power supply is connected to the rectifier 2, the rectified voltage being produced by sieving means, e.g. Capacitors (not shown), can be smoothed.
  • the switching stage 3 contains switching transistors (bipolar power transistors, field effect power transistors) or thyristors that can be switched on and off, which are controlled by a pulse width modulator via driver stages, as will be explained later with reference to FIGS. 2 and 3.
  • the switching transistors of switching stage 3 chop the direct voltage supplied by rectifier 2, and the chopped direct current is sent through the primary winding of a transformer 4.
  • a secondary rectifier 5, which emits the desired welding current or welding voltage, is connected to the secondary winding of the transformer 4, a sieve choke (not shown) is provided.
  • the pulse width modulator in switching stage 3 is controlled by an error signal from an analog controller 6, to which the setpoint and actual values of the welding current and the welding voltage are fed.
  • the microprocessor control 10 is also supplied with the signals from two pressure sensors 17 and 18, which are arranged in the line for the protective gas or in the water cooling circuit, as a result of which the pressure is monitored or the welding process is released.
  • the pressure values can also be shown on the display 13.
  • the monitoring and control of a wire feed motor 19 is also carried out by the microprocessor control 10, the speed of rotation with a e.g. optoelectronic rotary pulse encoder 20 detected and passed on to the microprocessor control as an actual value.
  • the two flip-flops 45 and 46 are reset in such a way that, at the end of the short circuit, the respective driver stage 25, 26 sends a reset signal to the reset input R of the respective flip-flop 45, 46.
  • the reset signal is in each case taken from a transistor (not shown) present in the driver stage and fed to the reset input R via a resistance and decoupling network (not shown).
  • the reset signal has, for example, positive potential during the on period of the transistors 21, 22 and is therefore ineffective for the flip-flops 45, 46, while it takes on negative potential during the blocking period of the transistors 21, 22 and thereby resets the flip-flops 45, 46.
  • both transistors 21 and 22 are switched off synchronously. This is done in such a way that e.g. the output of the flip-flop 46, optionally via an amplifier 51, is fed to the setting input S of the flip-flop 45. Likewise, the output of the flip-flop 45 is optionally fed to the setting input S of the flip-flop 46 via an amplifier 52. This mutual coupling of the flip-flops 45, 46 ensures that, when an error occurs, both transistors 21 and 22 are switched off within approximately 200 ns.
  • a waveform generator with an optionally adjustable waveform, frequency, amplitude and pulse duty factor is provided, the output of which is connected to a first input of an amplifier, to which. second input of the amplifier, an optionally adjustable DC voltage is applied, so that a superposition signal occurs at the output of the amplifier, which consists of the DC voltage and the superimposed output signal of the waveform generator and is fed to a control input of the analog regulator of the regulated switching power supply.
  • the structure of the Zu set device is described below with reference to FIG. 6.
  • Fig. 6, 1 denotes the mains connection and 2 the mains rectifier of the switching power supply, which is preferably regulated on the primary side.
  • Switching stage 3 of the switching power supply which is connected to the transformer, is connected to rectifier 2.
  • the secondary rectifier 5 is connected to the output of the transformer 4.
  • Switching stage 3 or its pulse width modulator is controlled again by analog controller 6, to which the actual values of the welding current and the welding voltage are fed via connections 54 and 55.
  • the outgoing from the secondary rectifier 5 terminals 8 and 9 in turn serve to connect the welding cable.
  • the superimposed signal emitted by the amplifier 59 can be fed to a control input 63 of the analog controller 6 if the components 56 to 62 are accommodated in the housing of the electronic welding device.
  • these components 56 to 62 are expediently accommodated in a separate housing according to the invention, which can be used in the vicinity of the welding point, thereby enabling remote control of the electronic welding device.
  • a voltage / frequency converter 64 is connected to the output of the amplifier 59, which converts the superimposition signal into a pulse sequence of variable frequency, which are passed via a remote control line 65 to an optocoupler 66 housed in the housing of the electronic welding device for the electrical isolation of the circuits.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding Control (AREA)
EP19820890153 1981-10-27 1982-10-25 Appareil de soudage électronique Expired EP0078252B1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
AT456581A ATA456581A (de) 1981-10-27 1981-10-27 Lichtbogenschweissschaltungsanordnung
AT4565/81 1981-10-27
AT229582A AT375289B (de) 1982-06-14 1982-06-14 Schutzschaltung fuer ein elektronisches schweiss- geraet
AT2295/82 1982-06-14
AT3622/82 1982-09-30
AT362282A AT376387B (de) 1982-09-30 1982-09-30 Steuereinrichtung fuer ein geregeltes schweissschaltnetzger[t
AT823867A ATA386782A (de) 1982-10-21 1982-10-21 Geregeltes schaltnetzgeraet zum gleich- und/oder wechselstromlichtbogenschweissen
AT3867/82 1982-10-21

Publications (3)

Publication Number Publication Date
EP0078252A2 true EP0078252A2 (fr) 1983-05-04
EP0078252A3 EP0078252A3 (en) 1983-12-14
EP0078252B1 EP0078252B1 (fr) 1987-12-09

Family

ID=27421745

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820890153 Expired EP0078252B1 (fr) 1981-10-27 1982-10-25 Appareil de soudage électronique

Country Status (2)

Country Link
EP (1) EP0078252B1 (fr)
DE (1) DE3277803D1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3534595A1 (de) * 1984-09-28 1986-04-17 Mitsubishi Denki K.K., Tokio/Tokyo Stromversorgung zum lichtbogenschweissen
AT383761B (de) * 1983-06-03 1987-08-25 Igm Ind Geraete Maschf Gmbh Verfahren zum lichtbogenschweissen
US4721844A (en) * 1985-06-28 1988-01-26 Franz Vokurka Electric arc welding process for filling a weld groove to a predetermined extent
EP0237488A3 (fr) * 1986-03-07 1988-10-19 Castolin S.A. Dispositif pour la génération d'un courant de soudage ayant une composante continue avec des impulsions de courant superposées
EP0586325A3 (en) * 1992-08-28 1994-08-10 Migatronic Svejsemask Method and apparatus for tig welding
EP0502478B1 (fr) * 1991-03-06 1995-10-11 Elpatronic Ag Procédé pour le soudage électrique par résistance spécialement avec courant de soudage alternatif non sinusoidal et arrangement pour la mise en oeuvre du procédé
GB2320110A (en) * 1996-01-11 1998-06-10 Illinois Tool Works Switch mode power supply; arc welding
RU2120362C1 (ru) * 1996-05-05 1998-10-20 Военный инженерно-технический университет Устройство для сварки
US6107602A (en) * 1996-01-11 2000-08-22 Illinois Tool Works Inc. Switchable power supply with electronically controlled output curve and adaptive hot start
CN107727962A (zh) * 2017-09-30 2018-02-23 深圳供电局有限公司 一种高压开关柜温升试验装置、系统及方法
CN109909587A (zh) * 2019-03-20 2019-06-21 浙江肯得机电股份有限公司 双mcu数字pi和pwm控制多功能焊机及其电路结构
CN115533267A (zh) * 2022-10-08 2022-12-30 唐山开元焊接自动化技术研究所有限公司 一种大功率逆变交直流两用弧焊电源电路和装置及使用方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3049442B2 (ja) * 1990-01-04 2000-06-05 シーアーシー・エヴァンズ、パイプライン、インタナシャナル、インコーパレイティド 自動溶接作業のための分散処理制御システム

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2435023A1 (de) * 1974-07-20 1976-02-05 Messer Griesheim Gmbh Wechselstromschweisstromquelle
CH623252A5 (en) * 1974-10-25 1981-05-29 Clemente Maule Direct-current arc welding apparatus with static members
NO790942L (no) * 1978-04-12 1979-10-15 Migatronic Svejsemask Sveisemaskin.
AT357642B (de) * 1978-08-14 1980-07-25 Elin Union Ag Gleichstrom-schweissstrom-steuergeraet zur licht bogenschweissung
US4254466A (en) * 1979-01-29 1981-03-03 Square D Company Power factor monitoring and control system for resistance welding
DE2908274A1 (de) * 1979-03-02 1980-09-11 Rudolf Rischke Vorrichtung zum steuern einer schweissgut-antriebseinrichtung
DE2913627A1 (de) * 1979-04-05 1980-10-16 Messer Griesheim Gmbh Einrichtung zum gleich- und/oder wechselstrom-lichtbogenschweissen mit einem wechselrichter

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT383761B (de) * 1983-06-03 1987-08-25 Igm Ind Geraete Maschf Gmbh Verfahren zum lichtbogenschweissen
DE3534595A1 (de) * 1984-09-28 1986-04-17 Mitsubishi Denki K.K., Tokio/Tokyo Stromversorgung zum lichtbogenschweissen
US4721844A (en) * 1985-06-28 1988-01-26 Franz Vokurka Electric arc welding process for filling a weld groove to a predetermined extent
EP0237488A3 (fr) * 1986-03-07 1988-10-19 Castolin S.A. Dispositif pour la génération d'un courant de soudage ayant une composante continue avec des impulsions de courant superposées
US5489757A (en) * 1991-03-06 1996-02-06 Elpatronic Ag Process for resistance welding arrangement for carrying out the process
EP0502478B1 (fr) * 1991-03-06 1995-10-11 Elpatronic Ag Procédé pour le soudage électrique par résistance spécialement avec courant de soudage alternatif non sinusoidal et arrangement pour la mise en oeuvre du procédé
EP0586325A3 (en) * 1992-08-28 1994-08-10 Migatronic Svejsemask Method and apparatus for tig welding
GB2320110A (en) * 1996-01-11 1998-06-10 Illinois Tool Works Switch mode power supply; arc welding
US6107602A (en) * 1996-01-11 2000-08-22 Illinois Tool Works Inc. Switchable power supply with electronically controlled output curve and adaptive hot start
RU2120362C1 (ru) * 1996-05-05 1998-10-20 Военный инженерно-технический университет Устройство для сварки
CN107727962A (zh) * 2017-09-30 2018-02-23 深圳供电局有限公司 一种高压开关柜温升试验装置、系统及方法
CN107727962B (zh) * 2017-09-30 2024-06-07 深圳供电局有限公司 一种高压开关柜温升试验装置、系统及方法
CN109909587A (zh) * 2019-03-20 2019-06-21 浙江肯得机电股份有限公司 双mcu数字pi和pwm控制多功能焊机及其电路结构
CN109909587B (zh) * 2019-03-20 2023-12-22 浙江肯得机电股份有限公司 双mcu数字pi和pwm控制多功能焊机
CN115533267A (zh) * 2022-10-08 2022-12-30 唐山开元焊接自动化技术研究所有限公司 一种大功率逆变交直流两用弧焊电源电路和装置及使用方法

Also Published As

Publication number Publication date
DE3277803D1 (en) 1988-01-21
EP0078252A3 (en) 1983-12-14
EP0078252B1 (fr) 1987-12-09

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